412 citations · 656 across the 14 of their papers we have counts for
14 papers
Dual View on Clear-Sky Top-of-Atmosphere Albedos from Meteosat Second Generation Satellites
Alexandre Payez, Steven Dewitte, Nicolas Clerbaux
Geostationary observations offer the unique opportunity to resolve the diurnal cycle of the Earth's Radiation Budget at the top of the atmosphere (TOA), crucial for climate-change…
A simple and effective parametrisation for Earth-impacting orbits
Alexandre Payez
This work presents a new parametrisation suitable for parameter-space studies of heliocentric Earth-impacting orbits. Originally motivated by the issue of potentially hazardous ast…
Parameter-space study of kinetic-impactor mission design
Alexandre Payez, Johannes Schoenmaekers
While almost all potentially hazardous asteroids (PHAs) with a size larger than one kilometre have been discovered, it is well-known that the vast majority of the smaller ones are…
Probing axions with the neutrino signal from the next galactic supernova
Tobias Fischer, Sovan Chakraborty, Maurizio Giannotti +3
We study the impact of axion emission in simulations of massive star explosions, as an additional source of energy loss complementary to the standard neutrino emission. The inclusi…
A fresh look on the limit on ultralight axion-like particles from SN1987A
Alexandre Payez
We revisit the limit on very light axion-like particles (ALPs) from the absence of gamma rays coincidental with the neutrino burst from SN1987A. We use updated supernova simulation…
Revisiting the SN1987A gamma-ray limit on ultralight axion-like particles
Alexandre Payez, Carmelo Evoli, Tobias Fischer +3
We revise the bound from the supernova SN1987A on the coupling of ultralight axion-like particles (ALPs) to photons. In a core-collapse supernova, ALPs would be emitted via the Pri…